Explore optionally disabling context population #199
Description
Context population is a core part of MistQL that can enable wonderfully readable queries, but occasionally it can lead to weird consequences such as method overwriting and non-homogenous arrays. We could, as part of MistQL instances, have an option to disable context population and have things exclusively resolve to the @ symbol.
Given that current context is overwritten completely, this'll incur more than a little complexity to get correct, and so I'm not convinced it's a good addition to MistQL without further changes.